Recent content by VenomP

And more importantly, how do I look at it/use it? I need to do some homework with it...

Thank you both very much!

The PhotoElectric Effect one where he got a spark or something... I just realised I know nothing about it.

I've looked all over the Board of Studies website but I can't seem to find solutions, only the past papers. It makes no sense that they'd just have the questions there but not the answers...

Mars is approximately 0.1x the weight of Earth, and has approximately 0.5x the diameter of earth. What is the approximate force due to gravity on Mars? Answer: 4m/s^2

When would an MRI be more desirable to use than a PET scan? Like, specifically what diseases would be diagnosed better by each? I figure since MRI works on detecting Hydrogen nuclei, it'd show things more clearly where there is a lot of water or something. So would these be totally useless for...

I'm trying to deduce differences in the diagnosing processes for each, but the only thing I have come up with so far is: PET identifies tissue function SPECT identifies organ function As for anything else, I can't find it. How would a single photon emission (SPECT) have such a different...

The answer is 6.812 x 10^2 apparently. :S

An FM radio station transmits at a frequency of 102.8 MHz (how many Hz in a MHz btw?). What is the energy, in joules, of each photon emitted by the transmitter?

Hey guys, Just wondering if you could help me remember all of the experiments which we have done and need to know for upcoming tests? (i.e. half yearly's) So from what I remember there's titration, brewing beer, heating fizzy drink...etc. Yeah, so any help remembering would be great. Thanks!

Hey guys, Just wondering if you could help me remember all of the experiments which we have done and need to know for upcoming tests? (i.e. half yearly's) Off the top of my head, there's the pendulum experiment, orbital velocity prac, the hanging coil on a swing thingo... Yeah, so any help...

I think it has something to do with stopping possible sparking. Could be wrong though.

Find the area bounded by the curves: y=sin^-1x, y=sin^-1(-x) and the line y=pi/4 I get to the working out stage, and apparently you have to multiply the found area by MINUS two instead of two (i know that you do this because the areas are symmetrical) but why minus two? Answer: 2-rt2 units...

If sin a = 3/4, 0 < a <pi/2 and sin b = 2/3, pi/2 < b < pi find the exact values of: i. tan 2a ii. cos (a - b) screw it, the question wont post properly

Show that (1+cos2A)/(sin2a) = cotA